Some error estimates for ( ? ? h, μ h ) have been derived by Babuska and Osborn.
Babuska和Osborn建立了 ( λh, μh ) 的误差估计.
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The method to determine COD of industrial waste water with H H - chemical oxygen - consumption measurer is introduced.
介绍了用HH - 型化学耗氧量测定仪测定工业废水COD的方法.
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